for #324, refine code for hstrs, support hijack handler.

@@ -495,6 +495,14 @@ SrsHttpMuxEntry::~SrsHttpMuxEntry()
     srs_freep(handler);
 }
 
+ISrsHttpMatchHijacker::ISrsHttpMatchHijacker()
+{
+}
+
+ISrsHttpMatchHijacker::~ISrsHttpMatchHijacker()
+{
+}
+
 SrsHttpServeMux::SrsHttpServeMux()
 {
 }
@@ -509,6 +517,7 @@ SrsHttpServeMux::~SrsHttpServeMux()
     entries.clear();
     
     vhosts.clear();
+    hijackers.clear();
 }
 
 int SrsHttpServeMux::initialize()
@@ -518,6 +527,24 @@ int SrsHttpServeMux::initialize()
     return ret;
 }
 
+void SrsHttpServeMux::hijack(ISrsHttpMatchHijacker* h)
+{
+    std::vector<ISrsHttpMatchHijacker*>::iterator it = ::find(hijackers.begin(), hijackers.end(), h);
+    if (it != hijackers.end()) {
+        return;
+    }
+    hijackers.push_back(h);
+}
+
+void SrsHttpServeMux::unhijack(ISrsHttpMatchHijacker* h)
+{
+    std::vector<ISrsHttpMatchHijacker*>::iterator it = ::find(hijackers.begin(), hijackers.end(), h);
+    if (it == hijackers.end()) {
+        return;
+    }
+    hijackers.erase(it);
+}
+
 int SrsHttpServeMux::handle(std::string pattern, ISrsHttpHandler* handler)
 {
     int ret = ERROR_SUCCESS;
@@ -629,8 +656,22 @@ int SrsHttpServeMux::find_handler(SrsHttpMessage* r, ISrsHttpHandler** ph)
         srs_error("http match handler failed. ret=%d", ret);
         return ret;
     }
+    
+    // always hijack.
+    if (!hijackers.empty()) {
+        // notice all hijacker the match failed.
+        std::vector<ISrsHttpMatchHijacker*>::iterator it;
+        for (it = hijackers.begin(); it != hijackers.end(); ++it) {
+            ISrsHttpMatchHijacker* hijacker = *it;
+            if ((ret = hijacker->hijack(r, ph)) != ERROR_SUCCESS) {
+                srs_error("hijacker match failed. ret=%d", ret);
+                return ret;
+            }
+        }
+    }
 
     if (*ph == NULL) {
+        // TODO: FIXME: memory leak.
         *ph = new SrsHttpNotFoundHandler();
     }
     
@@ -1066,6 +1107,14 @@ int SrsHttpMessage::update(string url, http_parser* header, SrsFastBuffer* body,
         _query[k] = v;
     }
     
+    // parse ext.
+    _ext = _uri->get_path();
+    if ((pos = _ext.rfind(".")) != string::npos) {
+        _ext = _ext.substr(pos);
+    } else {
+        _ext = "";
+    }
+    
     return ret;
 }
 
@@ -1162,6 +1211,11 @@ string SrsHttpMessage::path()
     return _uri->get_path();
 }
 
+string SrsHttpMessage::ext()
+{
+    return _ext;
+}
+
 int SrsHttpMessage::body_read_all(string& body)
 {
     int ret = ERROR_SUCCESS;

@@ -288,6 +288,7 @@ protected:
 };
 
 // the mux entry for server mux.
+// the matcher info, for example, the pattern and handler.
 class SrsHttpMuxEntry
 {
 public:
@@ -300,6 +301,23 @@ public:
     virtual ~SrsHttpMuxEntry();
 };
 
+/**
+* the hijacker for http pattern match.
+*/
+class ISrsHttpMatchHijacker
+{
+public:
+    ISrsHttpMatchHijacker();
+    virtual ~ISrsHttpMatchHijacker();
+public:
+    /**
+    * when match the request failed, no handler to process request.
+    * @param request the http request message to match the handler.
+    * @param ph the already matched handler, hijack can rewrite it.
+    */
+    virtual int hijack(SrsHttpMessage* request, ISrsHttpHandler** ph) = 0;
+};
+
 // ServeMux is an HTTP request multiplexer.
 // It matches the URL of each incoming request against a list of registered
 // patterns and calls the handler for the pattern that
@@ -338,6 +356,10 @@ private:
     // for example, for pattern /live/livestream.flv of vhost ossrs.net,
     // the path will rewrite to ossrs.net/live/livestream.flv
     std::map<std::string, ISrsHttpHandler*> vhosts;
+    // all hijackers for http match.
+    // for example, the hstrs(http stream trigger rtmp source)
+    // can hijack and install handler when request incoming and no handler.
+    std::vector<ISrsHttpMatchHijacker*> hijackers;
 public:
     SrsHttpServeMux();
     virtual ~SrsHttpServeMux();
@@ -346,6 +368,11 @@ public:
     * initialize the http serve mux.
     */
     virtual int initialize();
+    /**
+    * hijack the http match.
+    */
+    virtual void hijack(ISrsHttpMatchHijacker* h);
+    virtual void unhijack(ISrsHttpMatchHijacker* h);
 public:
     // Handle registers the handler for the given pattern.
     // If a handler already exists for pattern, Handle panics.
@@ -442,6 +469,10 @@ private:
     */
     std::string _url;
     /**
+    * the extension of file, for example, .flv
+    */
+    std::string _ext;
+    /**
     * parsed http header.
     */
     http_parser _header;
@@ -505,6 +536,7 @@ public:
     virtual std::string url();
     virtual std::string host();
     virtual std::string path();
+    virtual std::string ext();
 public:
     /**
     * read body to string.

@@ -689,10 +689,43 @@ int SrsLiveStream::streaming_send_messages(ISrsStreamEncoder* enc, SrsSharedPtrM
     return ret;
 }
 
-SrsLiveEntry::SrsLiveEntry()
+SrsLiveEntry::SrsLiveEntry(std::string m, bool h)
 {
+    mount = m;
+    hstrs = h;
+    
     stream = NULL;
     cache = NULL;
+    
+    std::string ext;
+    size_t pos = string::npos;
+    if ((pos = m.rfind(".")) != string::npos) {
+        ext = m.substr(pos);
+    }
+    _is_flv = (ext == ".flv");
+    _is_ts = (ext == ".ts");
+    _is_mp3 = (ext == ".mp3");
+    _is_aac = (ext == ".aac");
+}
+
+bool SrsLiveEntry::is_flv()
+{
+    return _is_flv;
+}
+
+bool SrsLiveEntry::is_ts()
+{
+    return _is_ts;
+}
+
+bool SrsLiveEntry::is_aac()
+{
+    return _is_aac;
+}
+
+bool SrsLiveEntry::is_mp3()
+{
+    return _is_mp3;
 }
 
 SrsHlsM3u8Stream::SrsHlsM3u8Stream()
@@ -765,10 +798,13 @@ SrsHlsEntry::SrsHlsEntry()
 
 SrsHttpServer::SrsHttpServer()
 {
+    mux.hijack(this);
 }
 
 SrsHttpServer::~SrsHttpServer()
 {
+    mux.unhijack(this);
+    
     if (true) {
         std::map<std::string, SrsLiveEntry*>::iterator it;
         for (it = tflvs.begin(); it != tflvs.end(); ++it) {
@@ -853,8 +889,7 @@ int SrsHttpServer::http_mount(SrsSource* s, SrsRequest* r)
         // remove the default vhost mount
         mount = srs_string_replace(mount, SRS_CONSTS_RTMP_DEFAULT_VHOST"/", "/");
         
-        entry = new SrsLiveEntry();
-        entry->mount = mount;
+        entry = new SrsLiveEntry(mount, tmpl->hstrs);
     
         entry->cache = new SrsStreamCache(s, r);
         entry->stream = new SrsLiveStream(s, r, entry->cache);
@@ -1060,6 +1095,29 @@ int SrsHttpServer::on_reload_vhost_hls(string vhost)
     return ret;
 }
 
+int SrsHttpServer::hijack(SrsHttpMessage* request, ISrsHttpHandler** ph)
+{
+    int ret = ERROR_SUCCESS;
+    
+    // when handler not the root, we think the handler is ok.
+    ISrsHttpHandler* h = ph? *ph : NULL;
+    if (h->entry && h->entry->pattern != "/") {
+        return ret;
+    }
+    
+    // only hijack for http streaming, http-flv/ts/mp3/aac.
+    std::string ext = request->ext();
+    if (ext.empty()) {
+        return ret;
+    }
+    if (ext != ".flv" && ext != ".ts" && ext != ".mp3" && ext != ".aac") {
+        return ret;
+    }
+    
+    // TODO: FIXME: implements it.
+    return ret;
+}
+
 int SrsHttpServer::initialize_static_file()
 {
     int ret = ERROR_SUCCESS;
@@ -1138,8 +1196,10 @@ int SrsHttpServer::initialize_flv_streaming()
             continue;
         }
         
-        SrsLiveEntry* entry = new SrsLiveEntry();
-        entry->mount = _srs_config->get_vhost_http_remux_mount(vhost);
+        SrsLiveEntry* entry = new SrsLiveEntry(
+            _srs_config->get_vhost_http_remux_mount(vhost),
+            _srs_config->get_vhost_http_remux_hstrs(vhost)
+        );
         tflvs[vhost] = entry;
         srs_trace("http flv live stream, vhost=%s, mount=%s", 
             vhost.c_str(), entry->mount.c_str());

@@ -252,14 +252,27 @@ private:
 */
 struct SrsLiveEntry
 {
+private:
+    bool _is_flv;
+    bool _is_ts;
+    bool _is_aac;
+    bool _is_mp3;
+public:
     // for template, the mount contains variables.
     // for concrete stream, the mount is url to access.
     std::string mount;
+    // whether hstrs(http stream trigger rtmp source)
+    bool hstrs;
     
     SrsLiveStream* stream;
     SrsStreamCache* cache;
     
-    SrsLiveEntry();
+    SrsLiveEntry(std::string m, bool h);
+    
+    bool is_flv();
+    bool is_ts();
+    bool is_mp3();
+    bool is_aac();
 };
 
 /**
@@ -314,13 +327,14 @@ struct SrsHlsEntry
 * the http server instance,
 * serve http static file, flv vod stream and flv live stream.
 */
-class SrsHttpServer : public ISrsReloadHandler
+class SrsHttpServer : virtual public ISrsReloadHandler
+    , virtual public ISrsHttpMatchHijacker
 {
 public:
     SrsHttpServeMux mux;
-    // the flv live streaming template, to create streams.
+    // the http live streaming template, to create streams.
     std::map<std::string, SrsLiveEntry*> tflvs;
-    // the flv live streaming streams, crote by template.
+    // the http live streaming streams, crote by template.
     std::map<std::string, SrsLiveEntry*> sflvs;
     // the hls live streaming template, to create streams.
     std::map<std::string, SrsHlsEntry*> thls;
@@ -346,6 +360,9 @@ public:
     virtual int on_reload_vhost_http_updated();
     virtual int on_reload_vhost_http_remux_updated();
     virtual int on_reload_vhost_hls(std::string vhost);
+// interface ISrsHttpMatchHijacker
+public:
+    virtual int hijack(SrsHttpMessage* request, ISrsHttpHandler** ph);
 private:
     virtual int initialize_static_file();
     virtual int initialize_flv_streaming();